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Добірка наукової літератури з теми "Ovine pregnancy"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 20 лютого 2023

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Статті в журналах з теми "Ovine pregnancy"

Flanagan, P. G., D. Westmoreland, N. Stallard, I. M. Stokes, and J. Evans. "Ovine chlamydiosis in pregnancy." BJOG: An International Journal of Obstetrics and Gynaecology 103, no. 4 (April 1996): 382–85. http://dx.doi.org/10.1111/j.1471-0528.1996.tb09749.x.

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Honey, Laura. "Dealing with ovine pregnancy toxaemia." In Practice 43, no. 2 (March 2021): 59. http://dx.doi.org/10.1002/inpr.14.

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INNES, ELISABETH A., PAUL M. BARTLEY, DAVID BUXTON, and FRANK KATZER. "Ovine toxoplasmosis." Parasitology 136, no. 14 (December 2009): 1887–94. http://dx.doi.org/10.1017/s0031182009991636.

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SUMMARYCongenital infection with Toxoplasma gondii is an important cause of abortion in sheep worldwide. The cat is the definitive host of the parasite, and infected cats may shed millions of oocysts in their faeces resulting in extensive environmental contamination and an important source of infection for grazing herbivorous animals. Studies looking at development of specific antibodies in sheep, as an indicator of exposure to T. gondii, have shown that there is an increase in seroprevalence associated with age indicating that most infections in sheep occur following birth. The stage of gesta

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MacLaren, LA, GB Anderson, RH BonDurant, and AJ Edmondson. "Reproductive cycles and pregnancy in interspecific sheep<==>goat chimaeras." Reproduction, Fertility and Development 5, no. 3 (1993): 261. http://dx.doi.org/10.1071/rd9930261.

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The objectives of the current study were to determine whether interspecific sheep<==>goat chimaeras exhibited reproductive cycles of their component species and were capable of maintaining ovine and caprine pregnancies to term. All chimaeras had oestrous cycles and several exhibited characteristics of both ewes and does, including short, 6-7-day cycles. Sixteen caprine pregnancies were confirmed in eight sheep<==>goat and one hybrid<==>sheep chimaera from 21 embryo transfers; of these, six appeared normal by ultrasonographic examination during Weeks 5 or 6, but none progresse

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Hull, A. D., D. M. Long, L. D. Longo, and W. J. Pearce. "Pregnancy-induced changes in ovine cerebral arteries." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 262, no. 1 (January 1, 1992): R137—R143. http://dx.doi.org/10.1152/ajpregu.1992.262.1.r137.

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We examined the effects of pregnancy on the ovine cerebral vasculature by comparing several characteristics of isolated endothelium-intact segments of three intracranial arteries including the middle cerebral (MCA), posterior communicating (PC), and basilar (BAS) arteries taken from pregnant sheep (138-143 days gestation, term approximately 145 days) and nonpregnant controls. For comparison, segments of the extracranial common carotid (COM) artery were also studied. With pregnancy, vessel water content increased (5.4-5.8%) in all arteries except the PC. Additionally, cellular protein content i

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Keller-Wood, Maureen. "ACTH responses to CRF and AVP in pregnant and nonpregnant ewes." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 274, no. 6 (June 1, 1998): R1762—R1768. http://dx.doi.org/10.1152/ajpregu.1998.274.6.r1762.

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During both ovine and human pregnancy plasma cortisol is increased. In human pregnancy the placenta secretes corticotropin-releasing factor (CRF), but pituitary responses to CRF are decreased. However, in ovine pregnancy there is no measurable placental secretion of CRF. This study tests for changes in pituitary responsiveness to CRF or AVP. Pregnant and nonpregnant ewes were infused with saline or CRF at three doses (3, 9, 45 μg/h), with or without coinfusion of AVP (9 μg/h). AVP infusion increased plasma AVP to ∼250 pg/ml. CRF infusions increased plasma CRF from ∼25 to 50, 150, and 850 pg/ml

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Simmons, Rebecca M., David W. Erikson, Jinyoung Kim, Robert C. Burghardt, Fuller W. Bazer, Greg A. Johnson, and Thomas E. Spencer. "Insulin-Like Growth Factor Binding Protein-1 in the Ruminant Uterus: Potential Endometrial Marker and Regulator of Conceptus Elongation." Endocrinology 150, no. 9 (June 4, 2009): 4295–305. http://dx.doi.org/10.1210/en.2009-0060.

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Abstract Establishment of pregnancy in ruminants requires conceptus elongation and production of interferon-τ (IFNT), the pregnancy recognition signal that maintains ovarian progesterone (P4) production. These studies determined temporal and spatial alterations in IGF binding protein (IGFBP)-1 and IGFBP3 in the ovine and bovine uterus; effects of P4 and IFNT on their expression in the ovine uterus; and effects of IGFBP1 on ovine trophectoderm cell proliferation, migration, and attachment. IGFBP1 and IGFBP3 were studied because they are the only IGFBPs specifically expressed by the endometrial

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Santos, A. C., G. R. Arthur, H. Pedersen, H. O. Morishima, M. Finster, and B. G. Covino. "Systemic Toxicity of Ropivacaine during Ovine Pregnancy." Anesthesiology 75, no. 1 (July 1, 1991): 137–41. http://dx.doi.org/10.1097/00000542-199107000-00022.

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Zoli, A. P., J. F. Beckers, and F. Ectors. "Isolation of an ovine pregnancy specific protein." Theriogenology 33, no. 1 (January 1990): 366. http://dx.doi.org/10.1016/0093-691x(90)90790-z.

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Magness, R. R., M. D. Mitchell, and C. R. Rosenfeld. "Uteroplacental production of eicosanoids in ovine pregnancy." Prostaglandins 39, no. 1 (January 1990): 75–88. http://dx.doi.org/10.1016/0090-6980(90)90096-e.

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Дисертації з теми "Ovine pregnancy"

Regnault, Timothy Robert Hume, of Western Sydney Hawkesbury University, Faculty of Agriculture and Horticulture, and School of Agriculture and Rural Development. "Orchestrated partitioning of maternal nutrients during ovine pregnancy." THESIS_FAH_ARD_Regnault_T.xml, 1997. http://handle.uws.edu.au:8081/1959.7/15.

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Ovine placental lactogen (oPL) is postulated to be involved in the repartitioning of maternal nutrients during pregnancy, through its effect on insulin metabolism. Ovine pancreatic insulin responses to exogenous glucose are depressed during pregnancy and this depression becomes more pronounced as gestation advances. In addition, under the hormonal environment of rising oPL and growth hormone (oGH) concentrations, maternal whole body glucose irreversible loss (GIL) increases. The percentage of GIL accounted for by uterine glucose uptake also increases with advancing gestation and increasing lit

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Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy." Thesis, View thesis View thesis, 1997. http://handle.uws.edu.au:8081/1959.7/15.

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Regnault, Timothy Robert Hume. "Orchestrated partitioning of maternal nutrients during ovine pregnancy /." View thesis View thesis, 1997. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030513.111110/index.html.

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Thesis (Ph. D. of Philosophy)--University of Western Sydney, Hawkesbury, 1997.<br>"A thesis submitted to the School of Agriculture and Rural Development, Faculty of Agriculture and Horticulture, University of Western Sydney Hawkesbury, in part fulfilment of the requirements for the Degree of Doctor of Philosophy." Includes bibliographical references (p. 236-267).

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Clarkson, Alison Marie. "Maternal recognition of pregnancy and steroid receptors in ovine endometrium." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267152.

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Smith, James Joseph. "An investigation into hormonal regulation of ovine mammary gland growth during pregnancy." Thesis, Virginia Tech, 1985. http://hdl.handle.net/10919/41561.

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Prepartum, multiparous ewes were randomly assigned to experimental groups and sacrificed at 50(n=5), SO(n=4),115(n=5), and 140(n=4) days of gestation. Serum harvested the week prior to slaughter was assayed for progesterone (PG), prolactin (PRL) and growth hormone (GH) concentrations. Mammary tissue obtained at slaughter was assayed for receptor concentrations of progesterone (PGr), prolactin (PRLr) and insulin (Ir). Quantitative biochemical, histological and autoradiographical analyses were used to measure mammary gland growth and indicated no significant glandular growth occurs prior to 8O d

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Satterfield, Michael Carey. "Progesterone regulation of endometrial factors supporting conceptus growth and development in the ovine uterus." Diss., Texas A&M University, 2008. http://hdl.handle.net/1969.1/85963.

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Progesterone is unequivocally required for the establishment and maintenance of pregnancy in all mammals studied. Its known functions are complex and encompass global changes in gene expression. Therefore, studies were conducted to characterize the effects of progesterone on expression of genes for endometrial factors having roles in conceptus growth, implantation and establishment of pregnancy. The first study characterized the effect of an artificially induced early increase in circulating progesterone on conceptus growth and development and regulation of expression of galectin-15 (LGALS15),

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Gilbert, Jeffrey Stephen. "Cardiorenal adaptations of the ovine fetus and offspring to maternal nutrient restriction." Laramie, Wyo. : University of Wyoming, 2005. http://proquest.umi.com/pqdweb?did=1044392391&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.

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Chakrabarty, Anindita. "The ovine trophoblast kunitz domain protein-1 : gene structure, evolution and transcriptional regulation /." Free to MU Campus, others may purchase, 2005. http://wwwlib.umi.com/cr/mo/fullcit?p3189904.

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Lawes, Kathryn Patricia. "The ovine cyclophilin B gene : characterisation and expression during the oestrous cycle and early pregnancy." Thesis, University of Reading, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391348.

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Fan, Li 1967. "Interactions of renin-angiotensin and natriuretic peptide systems in control of blood pressure during ovine pregnancy." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39904.

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This thesis focuses on the renin-angiotensin system and atrial natriuretic factors (ANF) two hormonal systems which are stimulated and which may exert important antagonizing actions on the regulation of mean arterial pressure (MAP) and body fluid homeostasis during pregnancy. All experiments were conducted in healthy nonpregnant and/or pregnant (gestational age of 105 to 140 days, term = 145 days) mixed breed ewes, using a facility designed for studies of large animals. Findings from the first study with unilateral denervated kidneys provide evidence that renal nerves are a necessary component

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Книги з теми "Ovine pregnancy"

Zelinski, Mary Beth. Plasma membrane composition and luteinizing hormone receptors of ovine corpora lutea during early pregnancy. 1986.

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Частини книг з теми "Ovine pregnancy"

Bazer, Fuller W., J. L. Vallet, C. J. Ashworth, R. V. Anthony, and R. M. Roberts. "The Role of Ovine Conceptus Secretory Proteins in the Establishment of Pregnancy." In Cell and Molecular Biology of the Uterus, 221–35. Boston, MA: Springer US, 1987. http://dx.doi.org/10.1007/978-1-4684-1297-0_13.

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Battaglia, Frederick C. "Principal Substrates of Fetal Metabolism: Fuel and Growth Requirements of the Ovine Fetus." In Ciba Foundation Symposium 63 - Pregnancy Metabolism, Diabetes and the Fetus, 57–74. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470720462.ch4.

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Тези доповідей конференцій з теми "Ovine pregnancy"

Almendros, Isaac, Paula Martínez-Ros, Nuria Farré, Mónica Rubio-Zaragoza, Marta Torres, Álvaro J. Gutiérrez-Bautista, José M. Carrillo-Poveda, et al. "Late Breaking Abstract - Fetal blood hypoxia/reoxygenation swings are reduced by placental oxygen transfer in a model ovine pregnancy with sleep apnea." In ERS International Congress 2019 abstracts. European Respiratory Society, 2019. http://dx.doi.org/10.1183/13993003.congress-2019.oa4929.

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Звіти організацій з теми "Ovine pregnancy"

Boisclair, Yves R., Alan W. Bell, and Avi Shamay. Regulation and Action of Leptin in Pregnant and Lactating Dairy Cows. United States Department of Agriculture, July 2000. http://dx.doi.org/10.32747/2000.7586465.bard.

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The original project had four specific objectives: (1) To complete the development of a radioimmunoassay for bovine leptin; (2) To characterize the leptin system in lactating dairy cows during the transition from pregnancy to lactation; (3) To identify endocrine factors regulating the production of leptin by bovine adipose tissue; (4) To study the actions of leptin on bovine adipose and mammary tissues in vitro. However, BARD funded only the development of the bovine leptin RIA (Objective 1) for a single year. This report describes our work in completing this objective. Leptin, a protein hormo

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Bazer, Fuller W., Arieh Gertler, and Elisha Gootwine. Role of Placental Lactogen in Sheep. United States Department of Agriculture, January 2001. http://dx.doi.org/10.32747/2001.7574339.bard.

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Central problems in sheep and dairy cattle production are reproductive failure due to embryonic/fetal mortality and low birth weights, especially in prolific breeds, and reduced milk yields which adversely affect neonatal survival and economy of production. The sheep placenta expresses lactogenic (ovine placental lactogen, oPL) and somatogenic (ovine placental growth hormone, oGH) hormones. Our research has focused on the biological roles of oPL and oGH in function of the uterine endometrium during gestation and the mammary gland during pregnancy and lactation. Major conclusions were that: ( 1

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Spencer, Thomas E., Elisha Gootwine, Arieh Gertler, and Fuller W. Bazer. Placental lactogen enhances production efficiency in sheep. United States Department of Agriculture, December 2005. http://dx.doi.org/10.32747/2005.7586543.bard.

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The key objectives of this BARD project were to: (1) study long-term effects of immunization of prepubertal ewes against recombinant ovine placental lactogen (roPL) on subsequent birth weights of their lambs and their milk production; (2) optimize the anti-roPL immunization protocol using adjuvant preparations acceptable to producers and regulatory agencies; and (3) determine the physiological mechanism(s) whereby immunization against oPL increases fetal growth and development and mammogenesis. These objectives were based on key findings from a previous BARD project that: (a) immunization of e

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